The erasable quality is nice and does work, but the chief function to highlight things has been a big disappointment.

I don't think the erasers work all that well, but as long as you don't soak the page, a lightly moistened paper towel or cloth works great for removing the highlighted area, and it's a lot faster and easier than using the eraser

These are working great for me

These work fairly well on white paper, but not very well in books with recycled paper (which most of my kids' literature books for school are.)

Only the pink one works well for this trick

These are new to me, but the erasing function works quite well.

When working with students, I share these highlighters (and pens) with them while they are learning note taking, annotating, and identifying main ideas/details and they LOVE them